Figure 3.
CsPbBr3 nanocrystals obtained in a single reaction and with temperature variation using seed cluster injection method. (a) Successive absorption spectra obtained with an increase in reaction temperature at different time intervals and (b) corresponding PL spectra. Inset shows the overlapped PL spectra obtained with almost the same amount of samples collected from the reaction. Excitation wavelength is 350 nm. (c–e) TEM images representing wire/belt-like thinner and longer nanostructures, rectangular belt-like nanostructures, and cube-shaped CsPbBr3 nanocrystals obtained at different stages of the reaction. Reproduced from ref (40). Copyright 2018 American Chemical Society.